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SUMMARY:Shape Optimisation of Concrete Structural Elements Reinforced with
  WFRP (Wounded-Fibre-Reinforced-Polymer) Bars - Shizhe Hong\, University o
 f Cambridge\, UK
DTSTART:20250228T150000Z
DTEND:20250228T160000Z
UID:TALK228730@talks.cam.ac.uk
CONTACT:Shehara Perera
DESCRIPTION:In 2022\, building operations and construction accounted for 3
 7% of total global energy and process related CO2 emissions (UNEP\, 2023).
  Reducing these emissions is urgent. It is therefore worth rethinking the 
 most used building material – concrete. \nOne approach to lowering the e
 mbodied carbon of concrete structures is shape optimisation – using mate
 rial only where it is needed and taking advantage of the fluidity of concr
 ete to create non-prismatic structural elements (Orr 2012\; Orr et al. 201
 4). Another approach is replacing traditional steel reinforcement by alter
 native reinforcement\, such as WFRP (Wounded-Fibre-Reinforced-Polymer) Bar
 s which show the potential to reduce the embodied carbon compared to their
  steel-reinforced counterparts (Pavlović et al. 2022\; Garg and Shrivasta
 va 2019\; Inman et al. 2017). \nHowever\, non-prismatic beams and slabs mi
 ght be more prone to excessive deflection than their prismatic counterpart
 s due to reduced flexural stiffness (Tayfur 2016). Additionally\, WFRP-rei
 nforced elements often exhibit greater deflection than steel-reinforced on
 es\, because FRP bars (except carbon FRP) typically have a lower elastic m
 odulus than steel.\nTo address this issue\, it is necessary to optimise th
 e shape of WFRP-reinforced structural elements for Serviceability Limit St
 ate (SLS)\, ensuring they achieve lower embodied carbon than steel-reinfor
 ced ones whilst meeting design requirements for SLS. To achieve this\, a t
 heoretical method of shape optimisation for SLS is proposed\, demonstratin
 g higher efficiency than the existing method (Tayfur 2016). In addition\, 
 a flexural test on three BFRP- (basalt FRP-) reinforced concrete slabs was
  conducted in the NFRIS (National Research Facility for Infrastructure Sen
 sing) laboratory in 2024. \nThis presentation will cover this experimental
  study on the deflection of non-prismatic slabs in flexure as well as the 
 theoretical method of shape optimisation for SLS.
LOCATION:CivEng Seminar Room (1-33) (Civil Engineering Building)
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